PurposeCommand or Action
If the ip-address argument is configured for this command, the
RP-announce message will be sourced by the interface to which
this IP address is connected (that is, the source address in the
IP header of the RP-announce message is the IP address of that
interface).
Note
•
This example shows that the interface is enabled with a maximum
of 31 hops. The IP address by which the device wants to be
identified as RP is the IP address associated with loopback interface
0. Access list 5 describes the groups for which this device serves
as RP.
Configures the device to be an RP mapping agent.
ip pim send-rp-discovery [interface-type
interface-number] scope ttl-value [interval
seconds]
Step 12
•
Perform this step on RP mapping agent devices or on combined
RP/RP mapping agent devices.
Example:
Device(config)# ip pim
send-rp-discovery loopback 1 scope 31
Auto-RP allows the RP function to run separately on one device
and the RP mapping agent to run on one or multiple devices. It
is possible to deploy the RP and the RP mapping agent on a
combined RP/RP mapping agent device.
Note
•
Use the optional interface-type and interface-number arguments
to define which IP address is to be used as the source address of
the RP mapping agent.
•
Use the scope keyword and ttl-value argument to specify the
Time-to-Live (TTL) value in the IP header of Auto-RP discovery
messages.
•
Use the optional interval keyword and seconds argument to specify
the interval at which Auto-RP discovery messages are sent.
Lowering the interval at which Auto-RP discovery messages
are sent from the default value of 60 seconds results in more
frequent floodings of the group-to-RP mappings. In some
network environments, the disadvantages of lowering the
interval (more control packet overhead) may outweigh the
advantages (more frequent group-to-RP mapping updates).
Note
•
The example shows limiting the Auto-RP discovery messages to
31 hops on loopback interface 1.
Filters incoming RP announcement messages sent from candidate RPs
(C-RPs) to the RP mapping agent.
ip pim rp-announce-filter rp-list access-list
group-list access-list
Step 13
Example:
Device(config)# ip pim
•
Perform this step on the RP mapping agent only.
rp-announce-filter rp-list 1 group-list
2
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)
OL-29890-01 149
Configuring PIM
Configuring Sparse Mode with Auto-RP
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